Custom Age 625 Plus? fasteners from ARP are manufactured from a proprietary alloy that demonstrates superior fatigue cycle life, tensile strength and toughness with complete resistance to atmospheric corrosion and oxidation. These bolts are capable of achieving a clamp load range of 260,000-280,000 psi, making them a strength upgrade suited for the high-RPM, high-pressure nature of performance sport compact and import engine applications. For BoostLine connecting rods equipped with ARP Custom Age 625 Plus? bolts, simply look for a '+' symbol at the end of the part number.
- <ul><li>3/8 x 1.500 in. Standard Thread</li><li>ARP 625+ Custom Aged Material</li></ul>
- Each BoostLine rod is designed and finish machined in the USA in Mentor, Ohio, and inspected on aerospace-grade CMM equipment. They are manufactured to industry-leading precision and each rod set includes individual inspection reports detailing critical dimensions down to .0001in.